Combined pump and starter for explosive-engines.



' QYIW F. E. TEN EYCK.

COMBINED PUM P ANDSTARTER FOR EXPLOS| VE ENGINES. APPLICATION FILED JUNE 25.1914.

1 ,1 84,269 I Patented May 23, 1916;

6 SHEETS-SHEET F. E. TEN EYCK.

COMBINED PUMP AND STARTER FOR EXPLOSIVE ENGINES. APPLICATION FILED JUNE 25. 1914. 1,1 84,269. Patented May 23,1916.

6 SHEETS-SHEET 2- F. E. TEN EYCK. COMBTNED PUMP AND STARTER FOR EXPLOSIVE ENGINES.

- APPLICATION FILED JUNE 25. 19M. I 1,184,269. Patented May 23,1916.

6 SHEETS-SHEET 3- flflitmmao: 6. M RM F. E.'TEN EYCK.

COMBINED PUMP AN D STARTER FOR EXPLOSIVE ENGINES. APPLICATION FILED JUNE 25, 1914.

1,1 84,269. v Patentd May 23, 1916.

s SHEETS-SHEET 4.

- W anvemtva THE COLUMBIA PLANOGRAPH cu WASHINGTON, D. c.

APPLICATION FILED JUNE 25. 19 14.

Patented May 23, 1916.

'6 SHEETS-SHEET 5.

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comamau PUMP AND smma FOR EXPLOSIVE mamas.

Patented May 23,1916.

6 SHEETS-SHEET 6- APPLICATION FILED JUNE 25. 1914.

MrW

UNITED snares earn QFFTQE.

FRANK E. TEN EYGK, OF AUBURN, NEW YORK, ASSIGNOR TO AIR DEVICE MANUFAC- TURING COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF MAINE.

' COMBINED PUMP AND STARTER FOR EXPLOSIVE-ENGINES.

To all whom it may concern Be it known that I, FRANK E. TEN EYOK, a citizen of the United States, residing at Auburn, in the countyof Cayuga and State of New York, have invented certain new and useful Improvements in Combined Pumpsand Starters for Explosive-Engines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same' My invention consists in the novel fea tures hereinafter described reference being hadto the accompanying drawings which illustrate one embodiment of my invention selected by me for purposesof illustration, and the said invention is fully disclosed in the following description and claims.

Referring to the said drawings, Figure 1 represents a top plan view of my improved pump and starter operatively connected.

, with an explosion engine and arranged upon a chassis of an automobile; Fig. 2 is an end elevation of my improved pump and starter detached and drawn to a slightly larger scale. aortion s bein broken awa Fi 3 represents a plan view of the pump and :starter, the cap or cover of the valve casing bemg removed and parts of the figure belng represented in section. Fig. 4 is a vertical sectional view of the'pump andstarter taken through. two of the cylinders. Fig. 5 is a horizontal sectional vie'w'of the pump and starter through the crank shaft casing. Fig. 6 isan enlarged detail sectional view of the valve casing and valve, with the cover of the valve casing removed. Fig. 7 is a bottom plan view of the valve detached. Fig.- 8 is a top plan view of the valve casing with the valve removed. Fig. 9 is a detail view showing a modified form of driving mechanism for the rotary valve, with provision for changing the relative position of the valve with respect thereto.

The object of my invention is to construct a simple and powerful pump and starter for use preferably in connection with gasolene explosion engines installed in automobiles, motor propelled boats, and other motor propelled vehicles which can be driven by the engine for the purpose of compressing air into-a storage tank and which can also be operated as a motor, by the compressed air Specification of Letters Patent.

Patented May 23, 1916.

from the storage tank for the purpose of starting the engine and avoiding the necessity of manually cranking the same.

My invention comprises among other features an extremely simple construction of pump and starter by means of which the multiplicity of valves heretofore necessary in connection with devices of this character is eliminated and great economy in the manufacture of the device is effected.

My improved pump and starter comprises four cylinders 1, 2, 3, and 4, mounted upon a bed plate 5 having their axes parallel and arranged preferably at equal distance from each other, said cylinders being surmounted by a valve casing 6 containing a valve 7, the said casing extending over a portion of each of said cylinders and communicating with each of said cylinders by a single port, the said ports being indicated at 11, 12, 13 and 14. In the preferred embodiment of my invention shown in the drawings, the four cylinders are cast integral with the bed plate 5 and the valve casing 6, the cylinders and valve casing being accurately bored and the valve casing being provided with a cap or cover 8 which is in this instance screwed into the valve casing 6, the upper portion of which is provided interiorly with screw threads to engage exterior screw threads on the cap, suitable packing being provided if necessary to make a tight joint. The cylinders are supported upon a crank case 9 which preferably comprises a body or casing provided with detachable end plates 10 bolted or otherwise secured thereto and carrying bearings for a pair of crank shafts 15 and 16, each of which is provided with two cranks, the said cranks being indicated at 21, 22, 23, and 24, the cranks of each crank shaft being set at an angle of ninety degrees to each other and the crank shafts beingconnected by means of intermeshing gear wheels 17 and 18 secured thereto, in this instance with the crank case 9, in such manner that during every revolution the cranks of one shaft move upwardly, while the correspondingv cranks of the other shaft move downwardly, thereby substantially equalizing the strain on the several crank shafts. The relations of the cranks are illus trated in Figs. 4 and 5, and in Fig. 4, for

be seen that the crank 21 is moving upwardly while the crank 23 is moving downwardly and that as soon as the cranks 2'2 and 24 pass off of the dead center the crank 22 will move upwardly, while the crank 24 will move downwardly. It will also be seen that when two of. the cranks are on dead center on opposite sides of the axes of their respective shafts, the other two cranks will be ninety degrees from dead center, one moving upwardly and the other moving downwardly so that there is no tendency for the apparatus to stop ondead center at anytime. I 'Each of 7 piston movable therein and operatively connectedby a connecting'rod with one of the cranks the pistons being indicated by the numeral 19 and the connecting rods at 20,"

-' valve casing 6 for driving the rotary valve.

This shaft is preferably supported in a long sleeve or bushing 31, secured tothe bed plate 5 on its under side and projecting into the crankcase, and the lower end of the shaft 30 is provided with a spiral gear 32 which meshes with a spiral gear 33 on one of the crank shafts, in this instance being formed on the sleeve'16 surrounding the central portion of the crank shaft 16, although this is not essential. By "this means rotary motion is imparted to the valve actuating shaft 30 in time with the gear crank shafts and the pistons connected therewith. The upper end of theshaft 30 is provided with means for attaching the rotary valve thereto and in this instance the shaft is provided with a pair of recesses 34-34 (see Fig. 8) which are engaged by pins or dowels 35'35 on the rotary valve. The shaft 30 preferably extends slightly above the bottom of the valve casing 6 (see Fig. 6) and'the valve 7 is provided with a central recess 36 in which the'pins 35 are' located, said recessbeing slightly deeper than the projecting pieces of the shaft 30 ,to enable the'bottom' of the valve;7, which is accurately ground, to rest at all times on the bottom of the'valve casing. The shaft 30 is also provided'with a longitudinally;

disposed exhaust passa e-37 connected at aperture 39 communicating with the atmosthe cylinders is provided with a 7 be apparent that if the-crankshafts were driven from aprime motor and ,the device V 4 phere. The rotary disk valve7 is provided with a curved slot 40 which extends through V 7 an arc of slightly more than ninety. degrees, the said slot being so arranged as to uncover successively the ports '11, 12, '13, .and 14,.connected with the respective cylinders, andjbeing so constructed'as to uncover each port a little before the [instant when the preceding port is closed by thesolid, portion of-the valve. The valve 7 isa-lso provided at its under face with a curved recess or channel '41 of substantially ,thesame, or

slightly greater, length than the slot 40fand' having its central portion diametrically opi I the said recess 41.is connected by the radial posite the central portion'of the slot '40, and

channel 42 with the central recess 36 of the;

valve 'so' that when the valve is placed in f engagement with the valveshaft 30 asbest seen in Fig. 6, therecess 42' will establish communication through the slots 38 and exhaust passage 37 with the exhaust aperture 7 V 39, the pins 35, and recesses 34, before referred to, being so located as to hold'the" valve with the passage 42 in alinementwith cover 8 when in its closed position, as shown in Fig. 4, provides a slight space indicated slot 7 of the valve 7, and said cap orcover is'provided with a central" aperture which" is connected by'means of a pipe 50 with: a

storage tank 51, indi d'at ed in Fig. 1.

From the foregoing description, it will is operating as a pump, air will be admitted through the aperture 39, the longitudinal. passage 37, slot 38, passage 42, and recess '41, successively to the several ports 11,12,

13, and 14. connected with the cylinders and .a's the'cycle of the'*pump progresses, each cylinder will receive air in this manner during the downward strokeof its piston, and the air in each cylinder'will be compressed on the upward stroke of its piston, the comlpressed air being forced-through the cylinder port and through the slot-40 inIthe r0 tary valve, into the valve casing from whence'it passes by pipe 50 to the tank. 1 If pipe 50 tothe valve casing, and fwillbedis lon the return stroke ofthe piston throughi the cylinder port. the curved recess 41 in to the atmosphere;

9O the slot 38 in the shaft 30. I Thefcap 01'7","

'115 it isdesired to use the device asa motor acting under the pressure of the stored compressed 'air', the compressed air will be sup-' -plied from the storage tank through the: i

1'20 tributed by the rotary valve successively to the four cylinders to actuate the. pistons I therein, the vexpanded air being exhausted I the valve, the radial passage 42'. andthe slot 7 i p 38 ,pa'ssage 37. and aperture '39 inshaftf 30, 1

its upper end with a radial slotor recess 38 h and at its lower endwith a radial discharge"? In. Figul, which shows my improved V pumpj and-starter in operative relation with 13o starter arranged alongside of the engine and operatively connected therewith in such a manner that the engine may operate the device when it is used as a pump and when it is used as a starter it may be connected with. the" engine for starting the'same. In theformof theinvention herein shown, I

have provided suitable clutch mechanism and gearing interposed between the engine and the combined pump and starter to accomplish the desired result, it being understood that the engine shaft will always turn in the same direction while the crank shafts of the combined pump and starter, as heretofore described, will be rotated in one direction when acting as a pump and in the other direction when the device is acting as a motor, which necessitates the'reversal of the gearing between the engine shaft and the pump and starter. This may be accomplished'in difle'rent ways but a convenient form of mechanism for this purpose is shown in Fig. 1, in which the crank shafts" 15 and 16 are provided with pinions 52 and 53, loosely mounted on their. respective shafts and'each engaging an intermediate idle pinion. 54 mounted on-a stud 55, extending from'an adjacent end plate of the crank case. One of the crank shafts, inthis instancethe crank 16, is provided with .a

sprocket wheel 56 loosely mounted on the shaft, but which is rigidly secured to the adjacent gear wheel 53. In this instance the gear wheel is provided with a sleeve upon which the sprocket wheel 56 is mounted and keyed, as shown in vFig. 5. The sprocket wheel 56,-is connected by means of a sprocket chain 57 with a sprocket 58 on thecrank shaft of the engine or other shaft operatively connected with the crank shaft. The loose gear wheels 52-53 are provided with clutch -members- 52 53 and each crank shaft is provided with a movable clutch member 52"53 splined to the shaft or otherwisesecured, so as to permit longitudinal-movement thereof. By throwing in one of these clutches, the combined pump and startercan be actuated from the engine convenient reach of the operator, and preferably'near the steering wheel by means of which thevehicle is steered, for actuating these'clutches; and in the "present instance I have shown the movable clutch members .provided with annular grooves to receive yokes 61 and 62, which are carried by a horizontally disposed rock bar 63, pivotally connected with the end plate of the crank case 9. One end of this rock bar is connected by a link 64 with an arm 65 pivotally mounted on the other end of the crank case at 66 and provided with a rafz'k segment 67, which is engaged by a pinion 68 on a. rock shaft 69, preferably mounted in bearings secured to the steering head 70 and extending to a point adjacent to the steering wheel, the shaft 71 of which is indicated in Fig.1, the wheel being broken away. In order to steady the other end of the rock bar 63, I prefer, to provide it with a plunger 63*, engaging a stationary guide 64*, which may be conveniently formed on or secured to the crank case 9. The rock shaft 70 is pro-- also indicating the opposite positions of thelever for throwing one of said clutches in when the device is used as a pump and for throwing the other clutch in when the device is used as a starter. I also prefer to have this handle or lever 72 actuate the valve which controls the passage of air to and from the tank 51 through the pipe 50, and in this instance I have shown acontrol valve 74 interposed between the pipe 50 and the tank '51 and provided withan actuating arm 75 connected by a link 76 with an arm 77 secured to the rock shaft 69, the said valve 74 having a closed central position andtwo open positions on opposite sides of the central position so that when the lever 72 is moved to either position, the valve 74 will be opened to establish communication between the tank and the pump and starter. I also prefer to provide the tank 51 with a shut "off valve, or cock 51 for cutting off the tank from the rest of the apparatus when the apparatus is not in use, to prevent leakage of stored air. represents the dash of the automobile or other motor vehicle and I prefer to provide a. pressure gage, indicated at 81, which may be convenientlysupported in or upon the dash and is operatively connected with the pipe 50 to indicate the pressure in the tank.

In Fig. 1, 80

The tank or the pipe 50 may also be provided wit-h a safety valve which in this in-' hand lever is thrown to the pumpposition, the appropriate gear wheel 52 or'53 (in ing it-into the tank51 until the desired pressure-is ohtained, when the hand lever 72' and valve'74' will be restored to neutral po-' sition. If the engine is-at rest'and it is desired to start the same, it is only necessary to 'throw'the hand "lever 72 in the opposite direction, thereby throwing in the clutch for gear wheel 53 and simultaneously opening the air valve 74: when the compressed air in the'tank returning through the pipe will actuate the pistons in the cylinders and turn over the engine until it begins to act under the explosions of its explosive mixture when the lever 72 will'be restored to its neutral position. Y a

e In some instances I may dispense with the reversing gearing between the engine and the combined'pump and starter by providing means whereby the position of the rotary disk valve may be shifted one hunderd and eighty degreeswith respect to its actuating shaft in which case the crank shafts of the combined pump and starter will be actuated bereadily understood. In Fig. 9 I have in the same direction whether the device is operating as a pump or as a starter, as will shown one form of. mechanism by which the shifting of'thediskvalvewith respect to its shaft maybe convenientlyv effected: In this figure 7 represents the disk 'valve'which is constructed and operates in all respects in the same manner as the valve 7 heretofore described, except in the'following particu} lars. The valve actua-ting shaftis made in a two parts and 30 ,the part 30V being shaft is'held in fixed position by the engage-- connected with the valve, and the part 30 beingconnected with the spiral "gear 32. Uponthe meeting portions of the shaft sections 30' and 30 I provide a longitudinally movable sleeve which is provided with a pair of spiral or inclined slots 91-92 which engage pins 93 94, one of which is secured to the shaft member 30 and the other of which is secured to the shaft member 30 The said slots extend in this instance quarter way around the sleeve 90v and the pins and slots are so arranged that on shifting the sleevelongitudinally they will act upon the spins 9394:, and as the lower endof the iment of the spiral gear 32 with its driving spiral gear, the slot 91 will effect a quarter revolution-:of the valve 7 with respect to the sleeve, while the slot 92 will effect another-quarter revolution of the sleeve and .valve with respect toithe-lower shaft memher 30", thus rotating the valve 7 one hundred; eighty degrees with respect to the lower shaft member 30 and efiectua y re versing the valve. ThesIeeveQO-is shown as provided with an annular grooved portion 1 95 which is engaged by projections from a yoke 96 actuatedby a suitable lever 97 which p I 70 I V i maybe operativelyconnected withthe hand lever'72 or other actuating deviceby suitable linkconnections in any desiredway'. Vhen this mechanism shown in-Fig. 9 for reverse ing the position: of the valve is employed the reversing mechanism between the engine and ed thereon and op'eratively connected with the engine crank shaft, a single clutch being provided for connecting the gear or sprocket on the pump crank shaft therewith when the device is used either as a pump or as' a starters It will be seen that my improved pump and starter isextreme1y'simple' and can be cheaply made, and readily assembled and maintained in proper working condition as I there is only one valve controlling the four cylinders, the communicating ports; of: which act both as inlet and exhaust'ports.-

The construction also providesa combined pump and starter of great-powerand'efii- -ciency, while the individual-cylinders are. of" V v small size and the whole apparatusis-ex- .951 tremely compact and convenient tohe in-j' stalled in connection withthej int'ernal com-i f bustion engine,

I have shown and described thecyl- inders 'asbein g equally distant from each" other, and this'is. my preferred construction.

It is obvious, however, that they might be arranged inpairs above the respective crank- I shafts without being equally distant from each other, the cylinder ports in the valve" its,

casing being suitably connected with the cy-l-V:

inders. The equally distant, arrangement of; V

the cylinders, however, more symmetrical and'permits the uniform cylinder ports.

What I- claim and ters Patent is arrangement of the- V v ;:V desire to secureby Let- V 1. In a device fof'the kind described, the V combination; with four cylinders having their axes P rallel and disposed "equidistantly about a common center," a piston working in each of said cylinders, a single valve'casing for all of said cylinders having: four ports 'arranged in acirclefsaidg casing having an apertureadaptedto be con{ nected with a reservoir of compressed fluid,- and a separate aperture connected to the i at- V mosphere, of a rotary valve insaid casing, H

provided-with means ffora1temate1y co nnecting one of said ports-withthe casing aperture communicating with the pressure c 1 fluid reservoir, and simultaneously connect-F ingfanother of'said' ports w h thawing aperture communicating with the. atmosphere, driving connect ons including cranks also s operatively' connected to said pistons, and operative connections between said driving conn'ectionsand said valve.

2. In a device of the kind described, the combination with four cylinders having 7 their aXes parallel and disposed equidistantly about a common center, a piston working in each of said cylinders, a single valve casing supported by and secured to all of saidcylinders, and provided with a circular valve seat concentric with the common center about which the cylinders are disposed, saidvalve seat being provided with four ports, one of which communicates with each of said cylinders, said valve-casing be- 7 ing also provided with an aperture adapted communicating with the pressurefiuid reser-.

to be connected to a reservoir of compressedv fluid'and being also provided with an aperture communicating with the atmosphere, a rotary valve in said casing provided with means for bringing said ports consecutively into communication with said. aperture voir,f and simultaneously; bringing another of s'aidport's into communication with the" atmosphere, a piston in each of said cylinders,driving connections including cranks operatively connected with said pistons, and

operative connections between said "driving 80 connections and said valve.

' 3. In'a device of the kind described,the combination with four cylinders having their'iaxes parallel and disposed equidistantly'f about a common center, a, piston working in each of said cylinders, avalve casingforimd integrally with said cylinders and uniting them at their outer ends and beiso sis ingdispos'ed concentrically with the com- (men-center about which said cylinders are 40' arranged, said 1 valve casing being provided with ports communicating withisaid cylinders and having an aperture communicating with the atmosphere,and an aperture adapt a r edfto 'be connected with a fluid pressure reservoir," a rotaryvalve in said valve casing,.a pi'stonjm each of said cyl nders, drivsingiconnections including cranks operatively connected with said cylinders and connections. from the saiddriving connections to said rotary" valve.

24a. Infa device of the kind described, the

combination witli'four cylinders having their axes parallel ,anddisposed equidistantly 7 about a common center, a piston working each. of: said cylinders, said cylinders, beingopen at their inner. ends 7 and connected integrally by-a base plate, a

' valve casingfformed integrally with said cylinders, and Connecting their outer ends, saidl casing being arranged; concentrically withIthe commoni center around which the" icylindersaredisposed, the said lvalve cas ing being provided with ports,communicat-. with said ,cylinders, an aperture ,com-' municating with'the' atmosphere, and "an aperture adapted to be connected to a fluid pressure reservoir, a rotary valve in said valve casing, a plston in each of said cylinders, driving connections ncluding cranks connected with said pistons, operative conaround which the cylinders are disposed,

said valve casing being provided with ports communicating with said cylinders, an aperture adapted to be connected with a pressure fluid reservoir, and an aperture communicating with the atmosphere, a rotary valve. in said valve casing, a pair of parallel crank shafts each provided with two cranks, gear- -ing connecting said crank shafts, a piston in .each of said cylinders, connections between said cylinders and said cranks, and

operative connections between said crank shafts and said rotary valve. V

V 6. In a device'of the kind described, the combination with four cylinders, and a piston working in each of said cylinders, of

a pair of parallel crank shafts each provided with two cranks disposed at substantially right angles to eachother, gearing connecting said crank shafts and holding them in such relation that the vertical movement of each crank will be in a direction opposed to the vertical movement of a crank of the other shaft, connections between each piston and one of said cranks, a valve cas:

ingprovided with cylinder ports commu-- nic'ating with saidcylinders, said valve casing'beingprovided with a passage adapted to be connected with a tank and being also provided with a combined inlet and exhaust passage, a rotary valve vin said valve casing for controllingsaid ports and passage, and

operativeconnections between one of-said crank shafts and said valve.

7 .In a device of the kind described, the combination with four cylinders, and a piston working in each of said cylinders, of a pair of parallel-crank shafts, each provided with two cranks disposed substantially at right angles to-each other, intermeshing gears'connecting said crank shafts for 'caus ing' themto rotate in opposite directionsand maintaining said, cranks in such relation that vertical movement of each crank will be in a direction opposite to the direction of movement of, a crank; ofithe" other crank shaft, a valve casing provided withcylinder' ports communicatingwith i said cylinders,

said casing being also provided with a passage adaptedttobe connected to a tank, and

*Ja 'pa-ir of'crank shafts having their axes being also provided with {a combined inlet and exhaust passage communicating with "the atmosphere, a rotary valve in said valve casing for controlling said ports and pas sages,- and operative connections between "one ofsaid cranks and said valve for rotating thevalve. V

. 8. In a device ofthekind described, the

combination with four cylinders having their axes parallel, a piston in each cylinder,

,' parallel, connections between each of said is r said shafts being rotated, whenthe device crank'shafts and two'of said pistons, gearing connecting said crank shafts so as to cause them to rotate 1n opposite direct ons,

is 'used'as a starter, in directions opposite to their directions of rotation when the de vice is used as a pump, and means for in-f dependently connecting each of saidcrank shaftsv with the shaft of a prime mot-or whereby" the said prime motor shaft may rotate in the same direction regardless of; the direction of rotation of the crank shafts;

- 9.1I'n a device of the kind described, the

' combination" with four cylinders having their axesjparallel, apiston in each cylinder, a I pair of crank shafts having their axes parallel, connections between each of said crank shafts and two of said pistons, gear-' I ing connecting saidlcrank shafts, said shafts. I beingrotated; when the device is usedas a starter, in directions'opposite to their di-fi rections of rotation whenthe device is used as a pump, and gearing for connectingsaid *cranklshafts with the shaft of prime] motor, said gearing being provided" with" means' 'for maintaining the proper relative rotation of the crank shafts regardless I of which oneof the said shafts i's'inworking engagement with the shaft of the: prime;

' motor.- I

. ,10. In a device ma kind daaaa, the combination with four cylinders having their axesparallel, a piston in eachrylindenf a pair of crank shafts having'their axes parallel, gearing connecting "said .shaftsfOr rotation in opposite directions, connections between each offsaid crank shafts and two of, said 'pistons, a gear loosely'moun'ted "011* each vof said crank shafts; means .for con- I nectingsaid gearsso'as to canseltheni to-ro I tatsthe samedirection, means for -.c on'- necting ,oneofsaid gears to the shaft-of' a prime motor, and clutches for I indepen'd V ently connecting said gears'totheir respece tive shafts.

r v V 11; In a device 20f thekind described,fthe

combination a with four icylinders 'lhaving'; their "axes, parallel, a pistonin eachefynnder', V a pair 0 f; fcrank; shafts having theiri'axes '7 parallel, gearing-connecting saidf sha 'ftsfor rotation in opposite; directions,iconnections between each of saidcrankfsha'ftsand two rotate in the same 'direction',; means co nectingon'e 0f"'sa1d gears to the shaft of a 7 gear mounted; thereon, a pivoted leverco nected with-both of said clutches l-for throw ative position, said clutches jbeingj normally; 1n lnoperatlve positlon', and 'actnat ig mea s? controlling valve for the connecti n, sa diclutch' actuatingplever; II

combination "with iron 'working in :acn of said cylinders afsingle v r i a i'ng l br all ff isa iili der l-ha ing i fourfports arranged; casing having an -f'apertur en' dye j i ca s va. res??? clutches forthrowingjone ofsaid clutchesi f into operative position" and holding the, other clutch simultaneously out of operative f position;

12.1112, device r the kind described,it a combination with four cy inders h i their axes parallel, a piston in each cylinder, a pair of crankshaftS having their axesj' parallel, gearing connecting said shafts for rotationin pp irections, connections a between each of saidrcrank shaftsand two" I of said pistons, a gear loosely mountedon'g each of said crank shafts, 'meansffor con-j i necting said gears" so as to cause them v to rotate in the same direction,means ro an: I

neat-111M116 of sa g 'a s td 'theshaft of a 7o, v

prime motorfa clutch mechanism on each of said shafts for connecting; it withthe loose gear mounted thereon," a' .pivoted leverj connected withbothi ofisaid clutchesjfor r throwing one or other of said "clutches into operative position, said clutches being, nor

combination "with four cylinders ijhav'ing their axes; parallel, apistonfin eac'l'i cylinde 1vQQ a pair of crank shafts having their-faxes parallehzgeari'ng' connecting saidjfshafts for, '1 i l rotation in oppos te directions, connections,

betweeneach ofsaid' crank shafts andftwo" 'o'ffsaid pistonsya gear ;1 0 1y a adq each of." sa d crank shafts means' gforfcon nectmgsald'gears so as tocausethem to prime motor, a clutchmechanismfon"each off said shafts for connecting it with the I loo ing one; or other of-gsaidfclntches iiltQeQperk, I

for 4 said l'lever, a pressure reservoir i oper atively connected with said p stons, a dis tributer' interposed n sa d connection, a

between i :14. 11 device of the d; described,ithe .r r 1 :cars?-'h i their, axes parafllel fan'd 'd'spos 'd equidis}-f@ tantly about a ficommo" e center, f a: piston:

circ said;

mallyin inoperative position, and actuating; 7 means .fors'aid lever. E li'T-Q I, f 13. Ina device of th 1 il dfdescribed, the? f fluid, and a separate aperture communicating with the atmosphere, of a rotary valve in said casing provided with means for alternately connecting one of said ports with the casing aperture communicating with the pressure reservoir, and simultaneously connecting another of said ports with the casing aperture communicating with the atmosphere, a pair of crank shafts having parallel axes, connections between each of said crank shafts and two of said pistons,

gearing connecting said crank shafts, driving gearing connecting said rotary valve with one of said crank shafts and means for reversing the position of said valve with respect to said driving gearing.

In testimony whereof I aflix my signature in the presence of two witnesses.

. FRANK E. TEN EYCK. Witnesses:

JOHN H. SAWYER, 1 ROBERT J. BURRITT.

copies of this patent may be obtained for-five cents each, by addressing the Commissioner .01 ratentl.

v Washington, D. 0. 

